Color

#6357bc

#6357bc
hex#6357bc
rgbrgb(99, 87, 188)
hslhsl(247, 43%, 54%)
oklchoklch(0.521 0.153 285.2)
Closest name: slateblue (#6a5acd)Relative luminance 0.131

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#b0bc57

#577ebc · #9557bc

#bc6357 · #57bc63

Split-complementary

Open in tool →

#bc9557 · #7ebc57

#bc577e · #b0bc57 · #57bc95

Contrast

#6357bc as textRatioAAAA largeAAAFix
Aaon white
5.8:1passpassfail
  • AAA: use #5447b3 as the text (7.17:1)
Aaon black
3.62:1failpassfail
  • AA: use #7469c3 as the text (4.55:1)
  • AAA: use #968ed2 as the text (7.1:1)
  • AA: or shift the background to #e3e3e3 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6357bc as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#6357bc reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6357bc
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #6357bc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6357bc-a59cc4-dfaa4e-271f2d-e9ecf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md